Water head for drilling rigs



Dec. 11, 1928.

D. W. M ELROY WATER HEAD FOR DRILLING'RIGS Filed Junei4, 1926 D W. 2% B11110! 514012 for,

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Patented Dec. 1928;

- UNITED 'sT TEs 1,695,019 PATENT; OFFICE.

DAVID WEAR MCELBOY, QF KAUFMAN, TEXAS, ASSIGNOR F ONE-HATE TO GUY E.

' BOGGS, OE KAUFMAN, TEXAS.

WATER HEAD FOR DRILLING BIGS.

- Application filed June 14,

This invention relates to a water head for drilling rigs, one of the objects being to providea structure providing an extenslve packing base whereby considerable saving of time is effected inasmuch as one packing can be used for a much longer period than packings generally employed in structures of this character. f I I A further object is to provide the structure with anti-friction bearings for the pur- .pose of relieving pressure and allowing the" shell of the structure to rotate much more freely than heretofore upon the stationary wash barrel. v

A still further. object is to provide means whereby wear upon the parts can be taken up readily, accidental displacement of the parts is prevented and the entire device held. together properly under working conditions.

With the foregoing and other objects in view which will appear as the description proceeds, theinvention resides in the comb1- nation and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made withinthe scope of what is claimed without deyparting from the spirit ofthe invention.

In the accompanying drawin s, the preferred form of the invention has een shown. In said drawings,

Figure 1 is 'a central longitudinal section through the device.

Figure 2 is a section on line 2 2, Figure 1.

Figure 3 is asection on line 3-3, Figure 1; Referring to the figures by charactersof reference 1 designates the stationary wash barrel having a threaded'upperend as indi- 'cated at 2 for connection with a hose whereby water. can be directed therein. This barrel ext nds into a shell 3 the up er portion of whi h is interiorly screw t readed as shown at 4. The lower portion of the shell is reduced in diameter as indicatedat 5 and is interiorly screw threaded as shown at 6. Integral with this shell is an interior annu lar shoulder 7 the lower face of which is inclined as shown at 8. An annular enlarge- 0 ment 9 is provided on the barrel 1 within the shell 3 and arranged above and below this. enlargement .are roller bearings 10 which provide anti-friction means for bolding the shell centered upon the barrel and i rotatable relative thereto. The bear- 1926. Serial No. 116,059.

ings are held properly assembled with the barrel and with the shell by a hollow nut 11 which is fitted snugly'about the barrel and is screwedflinto theshell so as to engage the I threaded portion 4. This nut is eng ed by a lock nut 12 adapted to jam against tie end of the shell 3 as shown. The nuts 11 and 12 may be provided with recesses 13 whereby they can be engaged and actuated by a span.-

ner wrench. The space within the shell 3 between flange 7 and the closed end of the nut 11 constitutes a lubricating chamber 14:

for holding oilor grease and for use in emergencies there is provided a grease cup 15 which opens intoflthis chamber as shown. The tubular pin 16 has a threaded portion 17 which engages the interior thread 6 of. the shell 3 andhas its housed end flared as shown at 18. Packing indicated at 19' is arranged about the barrel 1 between the inclined face of the partition or flange 7 and the flared end '18 of the pin 16 so as to be properly compressed. A lock nut 19 engages, the threaded portion of this .pin and is adapted to jam against the lower end of the shell 3 this nut being preferably provided with recesses 20 whereby it can be engaged and actuated by .a spanner wrench. Recesses are also. provided in the'pin 16 as shown-at 21 by means of which a spanner 5 wrench can be used 'for tive to the shell.

It is to be understood that the device constituting the present invention is not to be used on deep well drills but is to be used in connection with core drills and pin 1.6 and shell 3 rotate with the drill stem. The weight of the drill stem is never supported by the head constituting the present invenrotating the pin rela- 1 tion while the drilling operation is going on and the only centering means necessary is the barrel 1 which is stationary. By providing the lock nut it will be a parent that all .of the working parts of tl ie head are kept in proper positions durin the 10 drilling operation; it being designat to have the threads so shaped that the lock nuts willtend totighten automatically while the drilling operation is goin on. Impor-' tance is attached to-the use 0' the extensive 10s packing at 19 which allows for a much longer run of the device without changing the packing than has heretofore been possibleo Consequently there is a saving ofmuch time and labor and thecost of opera ation is correspondingly reduced. In fact by this arrangement it has been found inpractice that one packing will be suflicient for several months whereas heretofore frequent changes of the packing has been necessary. The large lubricating chamber 14 permits the use of a considerable amount of lubricant so that after this chamber has once been filled very little attention need be given to the lubrication of the parts.

What is claimed is: A water head for attachment to and ada ted to be supported by a core drill, said head including a stationary water barrel having an annular enlargement between its ends, a'shell housing a ortion of the barrel and having an enlarge end portion and a reduced end portion, a hollow nut fitted snugly about the barrel and threaded into the enlargedend ortion of the shell, said nut being spaced or the greater portion of its length from the barrel, the nut and enlarged portion cooperating to provide a lubricant compartment, spaced annular series.

of tapered roller bearings interposed between the annular enlargement on the barrel and the nut and between the annular enlargement and theinner end of the enlarged portion of the shell, said bearings constituting means for taking up end and side thrust and for holding the barrel against longitudinal movement relative to the shell and in position at all times concentric with the shell, a packing between the reduced portion of the shell and the barrel, and adjustable means ture.

' DAVID WEAR McELROY. 

